air conditioner not grounding at ecu???

[nicknorth11]

I had my car checked out by two places, satan and an air conditioning specialist, and both places said my ecu isn't grounging my a.c. A technician at the dealership said there is a way to ground it myself by grounding the wire at pin 22 (a.c. compressor clutch relay) and grounding another wire which I forgot. He won't tell me again because he wants to do it as a side job and charge me. Does anyone know how to do this or know which wire I have to ground along with pin 22?

possible options:

pin 42 - a.c. intermediate pressure switch
pin 45 - a.c. switch

It sounds like pin 42 makes more sense since my switch seems to be working properly, but any info. would be appreciated.

thanks.

 

[dyablo]

Dont know if this will help but I will try since I was about to sell the car 3 weeks ago when I could not figure out the a/c problem.

Here was my problem in a short story. 96 gst compressor died at end of summer time. Waited for next summer to finally fixed it. Bought a refubished compressor from checks and had a shop install and recharged system. Worked good for about 2 days, then it would kick on and off. Took it back and they could not figure out what was wrong and said it had to be something electrical. Took it to the dealer and they said the same thing but would not even mess with it since i had to much wires installed into the ecu already. Took it to another dealers ship and expained my situtation and they said they could fix it. One hr later they call me and say i need a new compressor becuase a speed sensor inside compressor was bad. If they over ride the sensor it will destroy the compressor completely in a couple days. New compressor and problem fixed to this day.

So if your probelm seems about the same grounding pins manually would only be a band aid and have consequences. But thats just my experience I could be worng. Good luck tho.

 

[nicknorth11]

thanks for the info. I think my problem is different though. I had two places check all of the wiring, relays and switches and everything checked out fine until they checked the ecu. they said it wasn't grounding like it should. It is supposed to ground when not in boost and cut ground while in boost to eliminate parasitic loss of hp. mine is permanantly cut off, so by me grounding it the only consequence should be that it will remain on when in boost unless I manually turn it off. of course, this is all just what I was told by the satan tech.

I appreciate the advice. thank you.


more would also be appreciated.